import router from './router'
import store from '@/store'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import { getToken } from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'
import { getPermissionArray } from '@/utils/index'

NProgress.configure({ showSpinner: false }) // NProgress Configuration

const whiteList = ['/login', '/cover'] // no redirect whitelist

const checkPermission = (to, from) => {
  const resultRole = getPermissionArray(store.getters && store.getters.roles)
  let flag = true
  to.matched.forEach(v => {
    const perm = v.meta.permission
    let hasPermission = true
    if (perm) {
      hasPermission = resultRole.some(role => {
        return perm.includes(role)
      })
    }
    if (!hasPermission) {
      flag = false
    }
  })
  return flag
}

router.beforeEach(async(to, from, next) => {
  // start progress bar
  NProgress.start()

  // set page title
  document.title = getPageTitle(to.meta.title)

  // determine whether the user has logged in
  const hasToken = getToken()
  if (hasToken) {
    if (to.path === '/login' || to.redirectedFrom === '/') {
      // if is logged in, redirect to the home page
      next({ path: '/home' })
      // next()
      NProgress.done()
    } else {
      // 判断是否有权限，有显示页面，没有跳转到403页面
      if (checkPermission(to, from)) {
        next()
      } else {
        next({ path: '/403' })
      }
    }
  } else {
    /* has no token*/
    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else if (to.redirectedFrom === '/') {
      next({ path: '/cover' })
      // next()
      NProgress.done()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
    // next()
  }
})

router.afterEach(() => {
  // finish progress bar
  NProgress.done()
})
